per-message compression options

[alandefreitas]

fix #226, #227

[cppalliance-bot]

Timeline tracing charts: https://2480.beast.tracing.cppalliance.org/index.html

[cppalliance-bot]

Timeline tracing charts: https://2480.beast.tracing.cppalliance.org/index.html

[klemens-morgenstern]

Looks to be failing due to #2481.

[codecov[bot]]

Codecov Report

Merging #2480 (10ad742) into develop (00293a6) will increase coverage by 0.04%. The diff coverage is 82.60%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2480      +/-   ##
===========================================
+ Coverage    94.75%   94.80%   +0.04%     
===========================================
  Files          152      152              
  Lines        11868    12290     +422     
===========================================
+ Hits         11246    11651     +405     
- Misses         622      639      +17     

Impacted Files	Coverage Δ
include/boost/beast/websocket/stream.hpp	100.00% <ø> (ø)
include/boost/beast/websocket/detail/impl_base.hpp	85.71% <50.00%> (-0.78%)	:arrow_down:
include/boost/beast/websocket/impl/stream.hpp	73.78% <60.00%> (-0.71%)	:arrow_down:
include/boost/beast/websocket/impl/stream_impl.hpp	96.41% <100.00%> (+0.01%)	:arrow_up:
include/boost/beast/websocket/impl/write.hpp	98.50% <100.00%> (ø)
include/boost/beast/http/impl/error.ipp	94.11% <0.00%> (-1.01%)	:arrow_down:
include/boost/beast/websocket/impl/read.hpp	96.72% <0.00%> (-0.44%)	:arrow_down:
include/boost/beast/http/impl/basic_parser.ipp	94.85% <0.00%> (+0.25%)	:arrow_up:
include/boost/beast/core/impl/multi_buffer.hpp	97.94% <0.00%> (+0.35%)	:arrow_up:

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[klemens-morgenstern]

Drone passes now, the 4.8 issues seems fixed. @vinniefalco where are we at with this?

[vinniefalco]

Should be ok

[klemens-morgenstern]

Commited directly as squash